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Shalnov [3]
3 years ago
10

Simplify (4i)(–5i)(6i) –120 –120i(incorrect) 120i 120

Mathematics
1 answer:
professor190 [17]3 years ago
4 0

Answer:

120i

Step-by-step explanation:

;i × i = -1....so hence

4i × (-5i) = -20 i^2...which is -20(-1) = 20....

then you multiply with 6i

20(6i) = 120i

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a gardener uses a tray of 6 conical pots to plant seeds. each conical pot has a radius of 3 centimeters and a depth of 8 centime
lubasha [3.4K]
The volume of a cone is one-third of the product of the area of the base times the height, i.e.

(1/3)π(r^2)*h = (1/3)π(3cm)^2 *(8cm) = 75.40 cm^3

Now multiply that by the number of cones: 6 * 75.40 cm^3 = 452.40 cm^3.

Then the answer is 452 cm^3
3 0
3 years ago
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*A triangle has sides 42, 4x, and 2x−6. What is the possible range of x?
scoray [572]

Answer:

<h2>The Possible range for x is : ]8 , 18[</h2>

Step-by-step explanation:

To can draw this triangle if:

4x - (2x - 6) < 42 < 4x + (2x - 6)

solve inequality 1 :

4x - (2x - 6) < 42 ⇔ 2x + 6 < 42 ⇔ 2x < 36 ⇔ x < 18 (1)

Solve inequality 2 :

42 < 4x + (2x - 6) ⇔ 42 < 6x - 6 ⇔ 48 < 6x ⇔ 8 < x (2)

from (1) and (2) we deduce that : 8 < x < 18

3 0
3 years ago
What is 27/36 as a mixed number
Ivan
This fraction cannot be turned into a mixed number but it can be reduced to\frac{3}{4} or 0.75
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7 0
2 years ago
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What is 4.9987 rounded to the nearest houndred
Lerok [7]
5.00 is the answer! It is very close to 5 therefore it would immediately go to 5!
5 0
2 years ago
Is the enlargement or a reduction? Find the scale factor of the dilation.<br> Explain
malfutka [58]

Good evening ,

Answer:

In this case the dilation is a reduction (as you can see the image triangle is smaller than the original triangle)

and also the scale factor = OA’/OA = 2/6 = 1/3

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Step-by-step explanation:

Look at the photo below for more details (notice OA’ and OA).

________________________________________________

:)

4 0
2 years ago
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